wehner



2 Sheets-Sheet 1.

(No Modem G. WEHNER.

CLEANING BRUSH PoR MIDDLINGS PURIFIERS.

Patented Feb. 3, 1885.Y

INVFNTOR WITNBSSES .2% J/ ATTOR S .a

(No Model.) f 2 Sheets-Sheet 2.

C. WEHNER.

CLEANING BRUSH FOR MIDDLINGS PURIPIERS.

No. 311,622. Patented Feb. 3, 1885.

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iviiriib drains' Farmer LEANlNGERUSt-i FOR lidiDDLINGSw-PURIFIERS.

SQPEGIFCATON forming par?. of Letters Patent I'o. 311,622, dated February 3, 1885.

Application tiled May 2, 1&4. (No model.)

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Be it known that I, CHRISTIAN XVEUNER, of Bui'lalo, in the county ot' Erie and State of New York, have invented certain new and useful Improvements in Cleaning-Brushes for MiddlingsPuriters, of which the following is a specification.

rlhis invention has reference to an improved cleaning-brush for the silk screens o1" iniddlingspuriiiers, whereby a more uniform distribution of the middlings over the screens and a quicker screening action of the same is obtained. A

ln the accon-ipanying drawings, Figure l represents a side elevation of the upper part of a middlingspuritier, with my improved cleaning-brush for the screens. Fig. 2 is an end view of the same. Figs. 2'*L and 2b are details of a modified form of the cleaning'brush. Fig. 3 is a vertical longitudinal section ofthe screens and brush, and Figs. a, 5, and 6 are details ofthe mechanism for changing the direction of motion ofthe cleaning-brush.

Similar letters of reference indicate corresponding parts.

A in the drawings represents the boxes for the shaking screens at the iipperpai't of a niiddlings-puritier. rlhe shaking boxes are provided with detachable silk screens, a, ot' the usual approved construction.

Above the screens e at the top part of the puriiier are arranged longitudinal ways b b, for the traversing carriage C of the cleaningbrush I5. The carriage C is supported by grooved wheels b2 b"l on the ways b b, and retained thereon by guard-rails b that entend above the grooved wheels bi, as shown clearly in Figs. l and 3.

On the transverse shaft of the carriage C is loosely supported the cylindrical body D of the revolving brush B, said body being pro vided with longitudinal recesses into which leather strips d d are fastened. The. strips d d are slitted from the edge inwardly, the slits having enlarged openings at the inner ends next adjoining the body D of the brush, as shown in Fig. 2. Intermediately between the slitted leather strips are arranged longitudinal rows of bristles d.

The brush B receives simultaneously reciproeating and rotary motion from suit-able i transmitting mechanisms, so as to traverse over the screens. In the passage of the brush over the screens the slitted leather strips, having openings near the body of the brush, serve to uniformly distribute the middlings, while the bristles act on the meshes of the s'reen and open them.

1n the drawings two different means are shown for imparting reciprocating motion to the cleaning-brush B. The first mechanism is shown in Figs. l, 2, 3, and 4, and consists oi a longitudinal screw-rod, e, that is supported at one side ofthe supporting-frame ofthe niidthings-purifier, and alternately rotated by a suitabletransmitting mechanism and shiftinggear from the driving-shaft E. The screwrod e engages a screw-nut, e', of 'the rollercarriage G, Fig. 2, whereby traversing motion is imparted to the brush B. The drivingshait Etransmits by a pulley, c2, and two belts-a plain belt, e3, and a cross-belt, e4 and abeveli gear, e7 e, motion to an intermediate transverse shaft, ci), that is supported in bearings of the supporting-frame. The shaft e carries two fixed and two loose pulleys, e, on which the belts e3 e4 are shifted, so that when'one is on a loose pulley the other is Ona hired` pulley, and vice versa. The beltsliifter engages both belts c3 e", as shown in Fig. 3, its shank being guided in staples'of the frame and toothed at the inner end, the teeth being engaged by a pinion,f, of a short vertical shaft. f. A second pinioihf", on said shaft, is engaged by a toothed portion, f4, of alongitndinallyguided bar, f, having upwardlyextending lugs f6 near the ends of said bar. The lugsfG are engaged by a horizontal abutinent,fl, that is suspended from the shaft of the cleaning-brush B. When the cleaningbrush B arrives at one end of its motion, the

horizontal abutment f7 strikes against one of reversed when it arrives at the opposite end of the screens, at which point the horizontal IOO abutmentf1 strikes against the lug f 6 of the bar f5, so that the latter is moved in opposite direction. This motion is transmitted by the rackft, pinionfs, shaftfz, pinion f, and the toothed shank of the belt-shifter to the belts, which are shifted so as to reverse the motion ofthe brush B. Simultaneously with the traversing motion thus imparted to the brush B rotary motion is imparted to the same bya fixed rack, g, which meshes with agear-wheel, g",attached to the cylindrical body ofthe brush.

In place of the longitudinal screw-rod e the longitudinal screw-rod F shown in Figs. 5 and 6 may be used, which rod is cut with a right and left hand thread and adapted to en! gage an oscillating segmental tongue, 7L, the shank h of which turns in bearings ofthe nut Ff. The nut F is applied to the shaft of the brush, and causes the same to traverse with the nut F along the rod F. The latter mech` anism is simpler than the motion-transmitting mechanism shown in Figs. 1,2, 8, and 4, as the iight and left hand screw-rod F receives continuously rotary motion directlyfrom the driving-shaft.

The reciprocating and rotary motion imparted to the brush bythe mechanisms herein described cause. by the action ot' the brushes and slitted strips, the cleaning ot' the meshes of the screens and the uniform distribution of,

the middlings over the same, so that a more effective screening` action of the same is the result.

In place of one cleaning-brush having distributing-strips and cleaningbrushes, two separate rollers may -be used-one provided Witnesses:

With distributing-strips and ther other with cleaning-.brushes-as shown in Figs. 2* and 21. Having thus described my' invention, I claim as new, and desire to secure by Letters Patent- I 1. In a middlings-purifier, the combination.

substantially as set forth, with the shaking screens at the top of the purifier, of a rotary traversing middlings'distributer composed of 45 slitted leather strips provided With openings, rotary traversing brushes, and means for impartingsi multaneous rotary and reciprocatory motion to said distrihuters and brushes, substantially as described.

2. A cleaning brush and distributer for middlings purifiers, composed o'a cylindrical roller provided with rows ot' distributingstrips of slitted leather having openings, and with intermediate rows of cleaning-brushes, substantiallyas described.

3. In a middlings-purifier, thecombination,

WM. L. JoNns. EDWARD RUNG. 

